The Marshall Key House, also known as the Harriet Beecher Stowe Museum, is a historic site in Old Washington, Kentucky, built in 1807. It explores the stories of the Key family, Harriet Beecher Stowe, and the history of slavery in Kentucky. Stowe's visit in the 1830s, where she witnessed the harsh conditions of enslaved people, later inspired her to write *Uncle Tom's Cabin*. Guided tours showcase period furnishings, artifacts, and interpretive displays, offering visitors a profound connection to the abolitionist movement and local history.